If the sleeper wakes, the dream dies...Professor Colin Whisterfield spends his days at Jodrell Bank, using the radio telescope to look for his lost sister in the Pleiades. At the same time, and in another time, the Watcher cuts the rock and dances, to keep the sky above the earth and the stars flying. Colin can't remember; and he remembers too much. Before the age of twelve years and nine months is a blank. After that he recalls everything: where he was, what he was doing, in every minute of every hour of every day. But Colin will have to remember what happened when he was twelve, if he wants to find his sister. And the Watcher will have to find the Woman. Otherwise the skies will fall, and there will be only winter, wanderers and moon...